Has anyone ever heard of a 36yr old becoming pregnant when their husband has had vasectomy for the last 15 years?

While it is unlikely for a 36-year-old woman to become pregnant if her husband has had a vasectomy for the last 15 years, it is not impossible. Vasectomy is a surgical procedure that cuts or seals the vas deferens, the tubes that carry sperm from the testicles to the penis. While vasectomy is generally considered to be a highly effective method of contraception, there is a small chance that the vas deferens can reconnect, allowing sperm to reach the semen and cause pregnancy. This is known as vasal recanalization and is estimated to occur in approximately 1-2% of cases.

Additionally, a small number of pregnancies have been reported to occur after vasectomy due to the presence of "sperm granulomas." Sperm granulomas are collections of sperm that can form at the site of the vasectomy incision. These granulomas can release sperm into the surrounding tissues, which can then travel to the uterus and cause pregnancy.

Therefore, while the chance of pregnancy after a vasectomy is small, it is not zero. If you are concerned about the possibility of pregnancy, it is important to speak with your doctor or healthcare provider. They can provide you with more information about the risks and benefits of vasectomy and can help you decide if it is the right method of contraception for you.